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10ls | while read f; do mv "$f" "${f// /_}";done
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This doesn't work in bash, but in zsh you can typeset -T to bind a scalar variable to an array. $PATH and $path behave this way by default.
-4print -l $path -
You can get others rates changing the "EUR/US" part. look at the url: wap.kitco.com/exrate.wml to get more options. Show Sample Output
4curl -s wap.kitco.com/exrate.wml | awk ' BEGIN { x=0; FS = "<" } { if ($0~"^<br/>") {x=0} if (x==1) {print $1} if ($0~"EUR/US") {x=1} }' -
I like the order of the arguments better this way.
4at 6:00 <<< "xmms2 play" -
get diskusage of files (in this case logfiles in /var/log) modified during the last n days:
sudo find /var/log/ -mtime -n -type f | xargs du -chn -> last modified n*24 hours ago Numeric arguments can be specified as +n for greater than n, -n for less than n, n for exactly n. => so 7*24 hours (about 7 days) is -7sudo find /var/log/ -mtime -7 -type f | xargs du -ch | tail -n1Show Sample Output2sudo find /var/log/ -mtime -7 -type f | xargs du -ch | tail -n1 -
The unlock command for KDE 4.3 has changed from krunner_lock, this process doesn't exist anymore. So here's the update :-) If qdbus complains about not being able to find X, put a "DISPLAY=:0 " (:0 being your X server display) in front of the command.
6qdbus org.kde.screenlocker /MainApplication quit -
'jot' does not come with most *nix distros, so we need to use seq to make it work. This version tested good on Fedora 11.
5for x in `seq 0 25 $(curl "http://www.commandlinefu.com/commands/browse"|grep "Terminal - All commands" |perl -pe 's/.+(\d+),(\d+).+/$1$2/'|head -n1)`; do curl "http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/$x" ; done > a.txt -
Shorter version. Show Sample Output
14echo "${PATH//:/$'\n'}" -
Stop tormenting the poor animal cat! Also you should not that you need a private key not protected by a passphrase on middlehost that grants you access to securehost..
0ssh middlehost "ssh -a root@securehost '> nicescript'" < nicescript -
-2cat /service/solr/log/main/current | tai64nlocal | grep "\(`date '+%F %H'`\|`date '+%F %H %M' | awk '{print $1" 0"$2-1":"$3}'`\)" | grep QTime | awk '{print $NF}' | awk -F\= '{ s += $2} END {print s/NR}'
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Debian: Mark all dependent packages as manually installed. So they are not automatically removed if you remove some meta package - like gnome-desktop-environment for example.
2sudo aptitude unmarkauto $(apt-cache depends some-deb-meta-package-name | grep Depends | cut -d: -f2) -
By using vim, you can also filter content on stdout, using vim's extra power, like search pattern offset! No more awk of course, sorry. details : -e ex mode -s silent -c 'ex command' : global + start and end pattern + offset print (p) -cq : quit Show Sample Output
0vim -e -s -c 'g/start_pattern/+1,/stop_pattern/-1 p' -cq file.txt -
If you need to ssh into a computer on the local network but you're unsure of the ip to use, then ping them and see if you get a response. If you do, print out the address you got it from. Adjust the range to suit your network.
-2for i in 192.168.1.{61..71};do ping -c 1 $i &> /dev/null && echo $i;fi;done -
Nice little alarm clock to wake you up on time (hopefully). You can also do 'echo "vlc path/to/song" | at 6:00
1echo "xmms2 play" | at 6:00 -
In the vein of "can you do it better", here is my take on using "ping" to emulate sleep in a DOS/BAT script. If one can use ping at all then the multicast address will be valid but will not respond. By doing only one ping (-n 1) and setting a timeout in milliseconds (-w 10000) you have a fairly accurate timer. This example gives about a 10 second sleep.
-1ping -n 1 -w 10000 224.0.0.0 -
This is an extension of a previous command by satyavvd on 2009-07-23 12:04:02, but this one grabs the whole archive. Hard coded numbers in previous script capped number of commands that could be fetched. This one grabs them all regardless of how big the archive gets. Show Sample Output
0for x in `jot - 0 \`curl "http://www.commandlinefu.com/commands/browse"|grep "Terminal - All commands" |perl -pe 's/.+(\d+),(\d+).+/$1$2/'|head -n1\` 25`; do curl "http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/$x" ; done >a.txt -
1. find file greater than 10 MB 2. direct it to xargs 3. xargs pass them as argument to ls Show Sample Output
9find ./ -size +10M -type f -print0 | xargs -0 ls -Ssh1 --color -
3perl -i'.bak' -pe 's/old/new/g' <filename>
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"&&" runs sed if and only if the backup completed and /bin/cp exited cleanly. Works for multiple files; just specify multiple filenames (or glob). Use -v switch for cp to play it safe.
0for file in <filename>; do cp $file{,.bak} && sed 's/old/new/g' $file.bak > $file; done -
this command works with one gziped file per table, and restore 4 tables in parallel. Show Sample Output
3find -print0 | xargs -0 -n 1 -P 4 -I {} sh -c "zcat '{}' | mysql nix" -
2perl -e 'print scalar(gmtime(1234567890)), "\n"'
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this works on Solaris, so not better than the "only-GNU"-tool :-( I think, there is no one-liner for this, that will work on all *nix-es Show Sample Output
0echo "0t${currentEpoch}=Y" | /usr/bin/adb -
27date -d @1234567890
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2echo "aBcDeFgH123" | tr a-z A-Z
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copy files to a ssh server with gzip compression
14rsync -az /home/user/test user@sshServer:/tmp/ - ‹ First < 457 458 459 460 461 > Last ›
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